基于FPGA的星载HgCdTe探测器温控系统设计

摘要/Abstract

摘要： 大气主要温室气体检测仪采用HgCdTe探测器实现CO₂温室气体干涉光谱数据探测,HgCdTe探测器工作温度对探测器性能具有重要影响。针对HgCdTe探测器恒定低温下工作的需求,设计了温度采集电路与温控功率驱动电路,并以Actel公司反熔丝工艺FPGA作为主控单元, 结合PID算法,完成了星载HgCdTe探测器温控系统,实现了探测器在轨温度控制。实验及应用结果表明,控温精度优于 $\100dpi \inline \pm$ 0.5℃, 控温稳定性优于 $\100dpi \inline \pm$ 0.1℃/s,满足HgCdTe探测器在轨工作温度要求。

关键词: HgCdTe探测器, 温度控制, FPGA, PID算法

Abstract: HgCdTe detector was used to detect the interference spectra of CO₂ greenhouse gases on spaceborne greenhouse gas detection equipment. The performance of HgCdTe detector is significantly affected by operating temperature, and the detector needs to work at a constant low temperature. According to the operating temperature requirement, a temperature control system for spaceborne HgCdTe detector was designed. The system is mainly composed of temperature acquisition circuit, power-driven circuit and a main control unit based on FPGA. PID algorithm was adopted to realize precise temperature control. The experiment and application results show that the temperature control precision is better than $\100dpi \inline \pm$ 0.5℃, and the temperature stability is better than $\100dpi \inline \pm$ 0.1℃/s, which satisfies the on-orbit working temperature requirement of HgCdTe detector.

Key words: HgCdTe detector, temperature control, FPGA, PID algorithm

中图分类号:

TP79
TN215

路美娜,陈迪虎,李志伟,熊伟. 基于FPGA的星载HgCdTe探测器温控系统设计[J]. 大气与环境光学学报.

LU Meina, CHEN Dihu, LI Zhiwei, XIONG Wei. Design of Temperature Control System for Spaceborne HgCdTe Detector Based on FPGA[J]. Journal of Atmospheric and Environmental Optics.

参考文献

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